Vibration creating means



June 28, 1932. W* A, BUCKNER 1,864,975

VIBRATION CREATING MEANS Filed Sept. l2, 1928.

a 6 .is l 4 ATTORN EY Patented June 28, 1932 PATENT OFFICE WILLIAM A. BUCKNER, OF FRESNO, CALIFORNIA VIBRATION CREATING MEANS Application filed September 12, 1928. Serial No. 305,490.

This invention relates to rotating sprinkler heads such as are used in ground and overhead sprinkling systems and particularly represents improvements over the means for imparting vibration to the hea-d in my copending application for patent, Serial No. 192,906, flied May 20, 1927.

The principal object of the present 1nvention is to provide a means for impart-ing vi bration to the sprinkler head which is actuated by the iow of water through the head in a more simple and efficient manner than was previously the case and so that accurate adjusting of the vibration control element is not necessary as was the case with the pre vious device above mentioned.

At the same time the improved vibrating means is mounted in connection with the main parts of said previous device without having to make any alterations therein.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawing similar characters of referenoe indicate corresponding parts in the several views:

Fig. l'is a side elevation of my sprinkler head equipped with the vibration creating means.

v Fig. 2 is a sectional elevation enlarged of the vibration creating unit.

Fier. 3 is an end view of the water swirling element. i

Fig. 4 is an enlarged sectional elevation of a modiiied arrangement of the vibrating unit.

Fig. 5 is an end view of a modied form flat angle relative to the ground and carries a discharge nozzle 5 on its outer end.

A secondary discharge pipe 6 extends horizontally from the fitting in opposed relation to the pipe 4 and at its outer end has threaded vconnection with the tapped end 7 of a holy low ovoidal-shaped casing 8. In this instance the end 7 is at the small end of the casing and the longitudinal axis thereof, is longitudinally alined with that of the pipe 6. Projecting upwardly from the opposite or large end of the casing is another short length of pipe 9, which is disposed at an upward angle relative to the ground, and at a corresponding angle to the pipe 6 and longitudinal axis of the casing, but lying in a common vertical plane with said pipe. A secondaryv discharge nozzle l0 fixed on the outer end of the pipe 9 has a laterally disposed discharge slit 1l therein, extending from zle to the center thereof. j

The arrangement of parts thus far described is identical with the structure of the previous application. The reaction means to be found within the pear shaped casing Y of the previous application is not here shown however and the present invention contemplates the setting of the slit 1l at such an angle that the passage of water therethrough will set up a slight reactionary movement. against the head to cause the same to slowly rotate .when the spindle is kept uneasy on its seat by the means now to be described.

To impart the necessary vibration to the spindle so as to prevent the same from any tendency to stick in its bearing in the cage, I mount a short baliie or deflector disc 12 in the tapped end 7 of the casing 8, just inwardly of the pipe 6. This disc is provided with a plurality of circumferentially spaced slots 13 cut deeply in from the periphery of `the disc and extending at an acute angle relative to the plane of the longitudinal axis of the disc. The interposition of this disc between the casing and the pipe 6 causes a reduction of water pressure to be had in the casing over that in the pipe 6, and sets up a very rapid rotation or swirling of the water within the casing, which swirling continues for the full length thereof and out through the pipe 9,

one edge of the noz* even to the nozzle. By reason of the angularity of the discharge relative to the longitudinal axis of the casing, the water swirls around such axis and by reason of the ovoidal shape of the casing there is also a swirling action around the transverse axis of the same.

The result of this reduction of pressure and the combined swirling motion of the water around both axes of the casing is that a constant vibration is imparted to the casing by the water, which vibration is of course transmitted to the spindle with the desired and necessary results.

In the vibration unit arrangement shown in Figs. 4 and 5, the casing 8a to which the horizontal and angularly disposed pipes 6a and 9a respectively are connected is substantially the same as above described. The tapped end 7a to which the pipe 6a is connected, however, is at the large instead of the small end of the casing, and is disposed at an angle to the longitudinal axis of the casing. The disc 12a which is inserted in the end 7 a immediately beyond the adjacent end of the pipe 6a, and corresponding to the disc 12, only has a single diagonal or angularly extending slit 13a therein instead of a plurality of such slits as in the previous type.

With this arrangement the swirling water as it enters the casing from the disc 12a will be off center or in nonsymmetrical relation to the longitudinal axis of the casing and to the adjacent bulging side walls of the casing. This fact causes a much greater vibration to be set up in the casing than was the case with the reversed and previously described arrangement and gives just the proper vibration control for slow motion sprinkler heads. Also this positioning of the disc relative to the axis of the casing has a tendency to cause the swirl of the water to be broken up much quicker so that as the water reaches the nozzle it will not be broken into as fine a spray.

In either case the area of the disc slits or passages are proportioned so as to pass only as much water as is necessary and so that there will be the desired reduction of pressure inside the casing, and so that the water discharged through the secondary nozzle will have a lesser velocity than is in the pipe head of the disc. This makes for ease of control due to the lessen-ed reaction-kick from the water leaving the secondary nozzle.

In actual practice different sized nozzles and different sized passages through the baffle discs are used according to whether the device is used in a high or low pressure system. This may be easily done, since the discs are removably m'oiuited in the casings and are easy to change, and are the only parts which have to be changed in making the structure suitable for any operating condition.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the presentand preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is:

1. In a sprinkler the combination with a rotatable head of a reaction nozzle associated therewith whereby with the passage of water through the nozzle a force will be established tending to impart rotation of the head but which force alone is insufcient to rotate the head, and means to vibrate the head to render the ractionary force effective to so rotate the same7 such means comprising a pipe projecting radially from the head, a hollow ovoidal shaped casing to one end of which the outer end of the pipe is connected, a discharge pipe leading from the opposite end of the casing at an upward angle relative to the first named pipe, and a baflie disc in the casing interposed between the first named pipe and the interior area of the casing and provided with passage means to cause water entering from the first named pipe to be both reduced in pres-A sure and whirled about the interior of the casing whereby to effect vibration of the head.

2. In a sprinkler the combination with a rotatable head of a reaction nozzle associated' therewith whereby with the passage of water through the nozzle a force will be established tending to impart rotation of the head but which force alone is insufficient to rotate the head, and means to vibrate the head to render;

the reactionary force effective to so rotate the same, such means comprising a pipe projecting radially from the head, a hollow ovoidal shaped casing to the large end of which the outer end of the pipe is connected at an angle to the longitudinal axis of the casing, a discharge pipe leading from the small end of the casing and alined with such longitudinal axis, and a baffle disc mounted in the large end of the casing immediately in front of the adjacent pipe, such dise having a substantially peripherally located passage therethrough disposed at an angle to the longitudinal axis of the pipe whereby water flowing through the disc into the casing will effect a vibration of the head.

3. In a sprinkler the combination with a rotatable head of a reaction nozzle associated therewith whereby with the passage of water through the nozzle a force will be established tending to impart rotation of the head but which force alone is insuiicient to rotate the head, and means to vibrate the head to render the reactionary force effective to so rotate the same, such means comprising a discharge pipe projecting from the head, a"substan tially ovoidal enlargement in the pipe, the longitudinal axis of the pipe at the point of entry into the enlargement being at an angle to the axis of the pipe at the point of discharge from the enlargement, and means to discharge Water from the pipe into the enlargement at a reduced pressure relative to the pressure in the pipe and at an angle to the longitudinal axis of the enlargement.

In testimony whereof I affix my signature.

WILLIAM A. BUCKNER. 

